diff --git a/Chapter-4/activity_1/requirements.txt b/Chapter-4/activity_1/requirements.txt
index 424e5fb..0e84bdd 100644
--- a/Chapter-4/activity_1/requirements.txt
+++ b/Chapter-4/activity_1/requirements.txt
@@ -1,7 +1,7 @@
 appnope==0.1.0
 beautifulsoup4==4.6.0
 bleach==1.5.0
-certifi==2017.11.5
+certifi==2022.12.7
 chardet==3.0.4
 click==6.7
 colorama==0.3.9